Improvement in measuring-pumps



- s H. WHEELER. Measuring Pump.

Patented June 5, 1866.

UNITED STATES PATENT OFFICE.

S. H. \VHEELER, OF DOWAGIAO, MICHIGAN, ASSIGNOR TO HIMSELF, RICH- ARDHEDDEN, JAMES THOMPSON, AND ROBERT B. THOMPSON.

IMPROVEMENT IN MEASURING-PUMPS.

Specification forming part of Letters Patent No. 55,433, dated June 5,1866.

To all whom it may concern:

Be it known that I, S. H. WHEELER, of Dowagiac, in the county of Cassand State of Michigan, haveinvented a new and Improved PumptbrMeasuringLiquids as they are Drawn from Vessels; and I do hereby declare that thefollowing is a full, clear, and exact descrip' tion thereof, referencebeing bad to the aceom= panying drawings, making a part of thisspecification, in which- Figure 1 is a vertical central section throughthe pump. Fig. 2 is a top or end view of the measuring devices. Fig. 3is a side view of the measuringdevices and head of the pump. Fig. 4 is aperspective view of the measuring devices detached from the body otthepump.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention relates to a novel mode of constructing pumps for drawingliquids from vessels-as, for instance, in transferring liquids from vatsorreservoirs iuto barrels or casks.

The main object of the invention is to meas ure the amount of liquidwhich is drawn through the pump by providing the pump with a measuringand a registering device which shall operate automatically as the pistonor plunger of the pump is moved, as will be hereinafter specified.

To enable others skilled in the art to understand my invention, I willdescribe its construction and operation.

In the accompanying drawings my improved pump is represented in ahorizontal position but I contemplate using it in an upright position bypassing the pump-barrel into the head of the vessel containing theliquid to be transferred, so that the discharge of the liquid will takeplace above the level of the same in the vessel, thus. avoiding alldanger of leakage around or through the pump barrel which is notaccounted for by the registering apparatus about to be described.

A represents the barrel of the pump, which may be made of any desirablelength. It should be sufficiently long to reach the bottom of the vesselfrom which the liquid is drawn. B is a cylindrical receiver for one endof the barrel A, and G is an enlarged chamber into which the liquid isdrawn and from which it escapes through the valve to intothedischargenozzle O. The valve rt is a check-valve fog pre venting theinflux of'air during thedescent ot' the piston, and it is arrangedwithin the chamher 0 for the purpose of allowing of a free How of theliquid from the barrel A during the ascent of the piston.

The pumprod D passes through a stufting' box, I), and also through abracket-support and cylindrical tube, as will be hereinafter described.That end of the rod D which works within the pump-barrel is secured to acircular valve, 0, which has for its seat a ring-piston, c. This pistonis attached to the valve 0 by means of guard-wires or a cage, (1, sothat when the rod D is forced down the valve 0 will leave its seat orring 0 and be pressed against the bottom of the cage d, thus carryingwith it the ring 0, and when the valverod is drawn up the valve will beseated and carry with it the ring a. This arrangement will always insurethe instantaneous opening or closing of the valve at the termini of thestrokes of the piston-rod, and for this reason such a valve ispeculiarly adapted for a pump which is intended for measuring thequantity of liquid drawn through it. When the piston on the rod D isdrawn up it carries with it the liquid and fills the barrel A, the Valveaopening to allow of the escape of air. When the piston descends itsvalve 0 is opened and the valve to closed. Then, on drawingup the pistonagain, it carries with it the liquid, and at the same time dischargesthat which is above it. In this way the pump-barrel is always tilled,whatever may be the level of the liquid in the vessel from which theliquid is drawn. The operation of the pump will be the same if the valvea is placed at the lower end of the barrel A; but it is preferable tohave the valve to arranged, as shown in the drawings, in the enlargedchamber O.

The measuring of the liquid is as follows: E represents a bracket, whichmay be secured to a flange on the body of the pump or to some otherobject. To this bracket E a tube, g, is secured, which is concentric tothe rod D, that passes freely through the bracket, as shown in Fig. 1.The tube 9 serves asa central bear ing for a ratchet-wheel, g, and adisk, 1 which disk is secured to the wheel, so as to rotate around thetube with this wheel.

The ratchet wheel 9 and its disks receive an intermittent rotary motionfrom the springpawl h by means of a cone, F, on the outer end of the rodD, which cone forces the short lever ioutward at the termination ofevery descending stroke of the piston. The outer end of the rod or leveri is pivoted to the upper end of the spring j, to which the pawl h isattached. To this spring an arm, It, is pivoted, which arm is againpivoted to the bracket E, and causes the outer end of the lever t' tovibrate as this lever is thrust outward by the action of the conicalwedge F upon it. The spring-rod l engages with the teeth of theratchet-wheel g, and serves as a check for this wheel to prevent it fromturning backward. The wheel g is moved the distance of one tooth atevery descending stroke of the piston, and this movement is indicated bya hand or pointer, m, on the fixed tube g, which points at certainfigures indicating pints, quarts, and gallons. hen the disk or dialplate has made a complete revolution, a pin which projects from thebottom of the spur-wheel g will act upon the teeth of a ratchetwheel, a,and move the disk or dial -plate a a certain distance,thus registeringtens,hundreds, or thousands of gallons.

The circular wedge or cone F has a handle secured to it, and through theaxis of this wedge is a hole having a female screw cut in it forreceiving the male screw on the outer or upper end of the piston-rod. Byadjusting the cone or wedge F the piston rod can be lengthened orshortened, and in this way the quantity of liquid drawn at each strokeof the piston can be regulated.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The enlarged chamber 0 upon the upper end of the pumpbarrel, having acheck-valve, a, in it, as arranged in relation to the valve 0 on the rodJ), and caged piston a, substan tially as described.

2. Providing the upper end of the piston-rod D with acone or circularwedge, F, t'oractuating the registering devices at every descent of thepiston, substantially as described.

5; The vibrating ler'er '5, spring j, pawl 11, and arm is, incombination with the ratchetwheel g, disk 9 and a circular wedge, F, substantially as described.

4. In a pump having a registering device applied to it, providing forregulating the length of the piston-rod by means substantially such asdescribed. v

5. In a pump having the registering device applied to it, the use of avalve, 0 0, applied to the piston-rod, substantially as described.

S. H. WHEELER.

Witnesses:

JAMES HEDDON, A. H. REED.

